Answer: Adrenal gland
Explanation: It is an automatic response known as the 'Fight or Flight response, that is stimulated by our adrenal gland that is in our endocrine system produces adrealine.
These glands are located above the kidneys, and they secrete adrelaine when a person is angry or afraid. As in this situation, you see that the person is most likely to be afraid.
Adrelaine causes increase in heartbeat and blood pressure, and produces other substances for instant energy. This is when the situation, as mentioned before, 'Flight or fight situation' comes in hand, which is, it prepares the person to run away, or to fight from a dangerous situation.
<em>Hey, this is Venom, and I think that this is most likely the answer. Hope it helps you. </em>
Cells divide for growth, to repair tissue damage, and because the nucleus can only control a certain size of cell.
The right answer is The digestion of DNA by restriction enzymes.
The fragmentation of the DNA is done by bacterial enzymes called restriction enzymes.
Restriction-enzymes (or endonucleases) recognize and cut the DNA into a specific sequence. These enzymes are naturally produced in bacteria as a defense against bacteriophages - viruses that infect bacteria. The bacterial restriction enzymes cut the DNA of the invasive bacteriophage while leaving the bacterial genomic DNA healthy and safe through the addition of methyl groups.
These enzymes are used in practice at the laboratory level to explore DNA.
